131031552 has 80 divisors (see below), whose sum is σ = 364351680. Its totient is φ = 41766912.

The previous prime is 131031517. The next prime is 131031557. The reversal of 131031552 is 255130131.

It is not an unprimeable number, because it can be changed into a prime (131031557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33474 + ... + 37182.

It is an arithmetic number, because the mean of its divisors is an integer number (4554396).

Almost surely, 2^131031552 is an apocalyptic number.

131031552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131031552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182175840).

131031552 is an abundant number, since it is smaller than the sum of its proper divisors (233320128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131031552 is an equidigital number, since it uses as much as digits as its factorization.

131031552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3753 (or 3737 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 131031552 is about 11446.9014147934. The cubic root of 131031552 is about 507.9160793027.

Adding to 131031552 its reverse (255130131), we get a palindrome (386161683).

The spelling of 131031552 in words is "one hundred thirty-one million, thirty-one thousand, five hundred fifty-two".